Volvulus

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**Volvulus**
*Classifications and external resources*
ICD-10	K56.2
ICD-9	537.3, 560.2

A volvulus is a loop of the bowel whose nose has twisted on itself.<ref>Medical Terminology Systems: A Body Systems Approach, 2005</ref> It results in ischemia (loss of blood flow) and the accumulation of gas and fluid in the portion of the bowel obstructed.<ref>Medical Terminology Systems: A Body Systems Approach, 2005</ref> Ultimately, this can result in the death of tissues (necrosis, gangrene) of the blood starved tissue and requires immediate surgical intervention (jejunectomy, ileostomy, colostomy, bowel resection).<ref>Medical Terminology Systems: A Body Systems Approach, 2005</ref>

Volvulus occurs most frequently in middle-aged and elderly men.<ref>Medical Terminology Systems: A Body Systems Approach, 2005</ref>

Sigmoid volvulus is the most-common form of volvulus of the gastrointestinal tract and is responsible for 8% of all intestinal obstructions. Sigmoid volvulus is particularly common in elderly persons and constipated patient. Patients experience abdominal pain, distension, and absolute constipation.